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What is the actual difference between MVC and MVC Model2
pradeepkmr18
- Jul 10th, 2008
MVC1A Model 1 application control is decentralized, because the current page being displayed determines the next page to display. In addition, each JSP page or servlet processes its own inputs (parame...
ashishin
- May 12th, 2008
Hi,MVC is a design pattern. It contains two models. MVC Model1, MVC Model2 .Struts framework implements MVC Design Pattern. Struts can implement Model 1 and Model 2. Model 2 most properly describes th...
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How to call ejb from Struts
Purushotham2007
- Oct 29th, 2008
Yes, we use Service locator design pattern We can call from Action Calss through JNDI to home object. then call remote object from home object
kiran
- May 19th, 2007
Yeah I too agree with this, Here action class is client for EJBFirst get home interface object using JNDI then call remote interface reference variable and continue.
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Calling EJB in Struts
Where do we call EJB in Struts?
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How to deploy struts application in Weblogic?
Rudra_java
- Jan 14th, 2009
1st you create a war file of your application.Then start the weblogic server.
Then open the browser & write the url of weblogic in the address bar of the browser.
Then enter your user name & password.In the browser u got a deploy option.
You give the path of your war file.Hur Muhammad
- Mar 10th, 2008
You can create a WAR file of ur application and then u can use the websphere's hot deployment method to deploy ur application.
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Why was perform() method changed as execute() method in Action class?
Help me
arkhan_mum
- Feb 19th, 2009
The only difference between the two isexecute() throws Expection whereasperform() throws IOException and ServletExceptionperform() has now been depricated so one should use execute() only.
rakesh_mehta
- May 23rd, 2008
Hi.. In struts 1.1 perform() method is used in action class..but In struts 1.2 execute() method is arrive.. so that execute method is used in actio class.. But There is no difference between perform() and execute() method.. both works like same.. Execute the data from the ActionFormBean...
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Sturts Business Logic
What is "model" work in MVC architecture and What is Business Logic?
samuelravikumar
- Apr 20th, 2009
"Model" is one of the parts in MVC II Arichitecture. It mainly contains the business logic which interacts with Database and retrieves/stores the data.Sam.T
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Should every html form property have a corresponding formbean get/set and variable.?Can form property be omitted in a form bean?
rammaheswara
- Jul 23rd, 2009
No.It is not neede to have every html form property have a corresponding form bean get/set and a variable. For Ex. "submit" button is form property which may not be required to ca...
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Can we make Action class,DAOclass without Formclass
rammaheswara
- Jul 23rd, 2009
Yes.We can make Action class, DAO class without form class. In this case, we can get the form elements by using HttpServletRequest.getParameter("elementName");Mahes
Sanju
- May 2nd, 2007
Dont get confused1. In case of form, you got two options: a. Write an actual class with getter & setter method extending ActionForm ...
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What is the correct syntax for removing ActionMessages from the session context?
rammaheswara
- Jul 24th, 2009
As the ActionMessages represent the error scenarios for the current request, they must be stored in request scope not in session scope. hence no way of thinking of removing action messages from session scope.Mahes
Ajit
- Apr 4th, 2007
Yes Sp is right, and the statement to store the save ActionMessages isActionMessages am = new ActionMessages();saveMessages(request, actionMessages);
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When we are saving form bean ,What is the difference between session scope and request scope.
rammaheswara
- Jul 24th, 2009
When we want the action form to persist the values across the request, we set the action form to session scope.For ex. When i submit the registration form with some errors in the form, then in the Act...
chandu
- Aug 1st, 2007
Request scope is valid for one page to another page only.But Session scope valid for total application within period of a time.
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Why is the action class is singleton in nature? Isn't this creates a bottleneck for the requests?
geeksterrahul
- Aug 3rd, 2009
Struts 1 Actions are singletons and must be thread-safe since there will only be one instance of a class to handle all requests for that Action. The singleton strategy places restrictions on what can ...
kiran19999
- May 19th, 2007
Because here action class acts as a front controllerso each and every request should go through it and for logging mechanism its easier You need not write Log4j class again and again in each servlet.
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Enable and Disable Validators
How can we enable and disable the validators in struts framework
anoophp_777
- Sep 1st, 2009
With appropriate changes in Struts-config file.. you have to enable the validator as true.
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Can input form property be omitted in a formbean ? is it mandatory for every form property to have a corresponding formbean get/set and variable ?
subhani_syed
- Sep 4th, 2009
Yes, if you omit the property in a form bean, that it is in the form. The disadvantage for this is you can't use the property in your application. That means it is useless to have a property value in...
sandeep verma
- Mar 14th, 2007
Can you give me one example
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How do you identify user session has been ended (at a particular time ) and forward a page to login page automatically
coolsiva
- Sep 22nd, 2009
if(request.getRequestedSessionId() == null) { //user requesting for new session //forward to loging page.. } else if (!request.isRequestedSessionIdValid()) { //user requesting for invalidated session ...
masarrat
- Jul 2nd, 2009
I agree with raghavageek but if server is restarted then what? use listeners for same.
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When you have a global forward and a local forward in struts-config.xml, which one will be called
Kola.Nareshreddy
- Nov 19th, 2009
By default precedence is given to the local forward. Global forward is like global and available always, but if you don't want that global forward then very well you have to add a local forward. It's just like Local and Global variables.
muvvalasrinu
- May 28th, 2009
Local Forwards always override Global Forward names. So for example, if you have a Global Forward with the name shoppingCart and a local Forward with the same name, the local Forward takes priority. If a local Forward can not be found then Struts will try to find the same name among Global Forwards.
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Can i have more than one ActionServlet class file in my application?
sriragv
- Nov 28th, 2009
We can have more than one Action Servlet but Struts controller follows the front controller design pattern. As per this pattern we will have only one controller. Designing more than one action servlet is breaking the rule of design pattern.
coolsiva
- Sep 22nd, 2009
Yes, but?stuts-config definition are stored in the application scope with a key so when the second definitions comes in the web.xml, the second struts-config overrides the previous one.
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How to connect data source for mysql in tomcat server
dhayasinfo
- Dec 3rd, 2009
We can configure the database connection by setting the connectino atributes in server.xml file which is available in conf folder in the tomcat home path. In this server.xml file there is an tag attri...
masarrat
- Jul 2nd, 2009
First download mysql.jar and mysql connector then load the driverClass.forName("com.mysql.jdbc.Driver");then create a database in mysql lets assuse "test" is the database name. for...
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Struts Config File
Can we config more than one struts-config.xml files in 2EE? If Yes, How?
anjubhaskar
- May 4th, 2010
Yes. We can configure more than one struts- config.xml file.But we have to mention the path of all struts-config files in the web.xml file.Just like this... <init-param> <param-name>...
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What is difference between the mvc1 and mvc2 design pattern?
Sathishchandra
- May 13th, 2010
Main difference is:in MVC1 design pattern view and controller elements are implemented using servlets.in MVC2 design pattern view is implemented using JSP and controller is implemented using servlets.
rasahere
- Jul 8th, 2009
MVC1 was a first generation approach that used JSP pages and the JavaBeans component architecture to implement the MVC architecture for the Web. HTTP requests are sent to a JSP page that implements Co...
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Can we go one page to other page using java script or action Mapping ?
Ans: No , when we go one page to other page then we using both , but no togetherotherwise browser incompatible problem arise.
kumar3_99
- Jul 7th, 2010
Yes. We can achieve this either using JavaScript or action mapping. If you use JavaScript, we can use the 'location.href' to go one page to other page.If you use action mapping, we can use the findForward method to go one page to other page.
siva
- Jul 27th, 2007
Use ForwardAction class to carryout this task
Struts Interview Questions
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